Face description from laser range data

J. T. Kent; Kanti V. Mardia; Sophia Rabe

doi:10.1117/12.179265

8 July 1994 Face description from laser range data

J. T. Kent, Kanti V. Mardia, Sophia Rabe

Proceedings Volume 2299, Mathematical Methods in Medical Imaging III; (1994) https://doi.org/10.1117/12.179265
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Laser scanners are used to measure and store surface coordinates of the human face. Descriptions of shape can be extracted to provide visual interpretations or building blocks for further statistical analysis. We discuss three methods of describing shapes; (a) segmentation of the surface into regions of uniform `surface-type' based on curvature information; (b) representation of the shape by the locations of a parsimonious set of landmarks and derivative information at these landmarks; (c) surface fitting by kriging using landmarks with derivative information. A surface-type segmentation provides an easily interpretable map of the face and highlights areas of the surface where the curvatures change abruptly. Landmark data may be used for statistical comparisons of shapes. And finally, kriging surfaces may be used to visualize the landmark information.

Citation Download Citation

J. T. Kent, Kanti V. Mardia, and Sophia Rabe "Face description from laser range data", Proc. SPIE 2299, Mathematical Methods in Medical Imaging III, (8 July 1994); https://doi.org/10.1117/12.179265

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